20.500.12556/DKUM-26036 Supercritical fluid adsorption and desorption of lipids on various adsorbents In present work the feasibility of using supercritical fluid chromatography (SFC) for separation of free fatty acids (FFA) and triglycerides has been examined. Lipids such as oleic acid and sunflower oil (containing 96% of triglycerides) were used; adsorption and desorption on adsorbents such as silica gel and neusilin using supercritical $CO_2$ as mobile phase was investigated. The experiments were performed at 40 °C and in the pressure range from 13 to 30 MPa. Adsorption kinetic lines were determined by analysingbreakthrough curves. Several parameters such as rate of adsorption and desorption, loading, desorbed quantity and diffusion coefficients in solid phase were calculated. Raziskali smo uporabnost postopka superkritične kromatografije (SFC) za separacijo prostih maščobnih kislin (FFA) in trigliceridov. V eksperimentih adsorpcije in desorpcije na silikagel in neusilin smo uporabili oleinsko kislino in sončnično olje, ki je vsebovalo 96 % trigliceridov. Kot mobilno fazo smo uporabili superkritični $CO_2$ pri 40 °C in v območju tlakov od 13 do 30 MPa. Študirali smo kinetiko adsorpcije in desorpcije in določili parametre kot so adsorpcijska in desorpcijska hitrost, adsorbirana in desorbirana množina substance ter difuzijske koeficiente substanc v trdni fazi (adsorbentu). supercritical fluid chromatography lipids oleic acid triglycerides adsorption desorption superkritična tekočinska kromatografija lipidi trigliceridi adsorpcija desorpcija true false true Angleški jezik Slovenski jezik Znanstveno delo 2012-05-31 11:45:25 2012-05-31 11:45:25 2022-04-15 13:19:07 2023-12-31 03:26:39 2007 0 0 str. 688-692 št. 4 Letn. 54 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1318-0207 66-987 14086149 12002326 1318-0207 URN:SI:UM:DK:XIN6GAO9 Acta_Chimica_Slovenica_2007_Skerget,_Knez_Supercritical_fluid_adsorption_and_desorption_of_lipids_on_various_adsorbents.pdf Acta_Chimica_Slovenica_2007_Skerget,_Knez_Supercritical_fluid_adsorption_and_desorption_of_lipids_on_various_adsorbents.pdf 1 8218A504164ED544E1233BAF762C7C4B 42143558cf3d6a4445d95f76c1739d81ee9f6f683bea041ca2d7e85ef557fd72 1c014639-7c07-11eb-bb7a-00155d0001ca 20.500.12556/dkum/fd3f7781-3f44-4cb1-8f61-6dc8a1b0df79 https://dk.um.si/Dokument.php?lang=slv&id=116044 http://acta-arhiv.chem-soc.si/54/54-4-688.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=116045 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0